A RAPID TEMPERATURE REDUCTION DEVICE AND THE METHOD THEREOF IN THE TEMPERING PROCESS

摘要

The present invention relates to a rapid temperature reduction device and a method thereof in a quenching tempering process, more specifically, wherein a quenching-tempering (QT) device comprises: a quenching unit (100); a tempering unit (200); and a control unit (300) controlling the quenching unit (100) and the tempering unit (200). The tempering unit (200) comprises: an air blower (230); a blast pipe (232); and an automatic opening and closing cover (236).